Presenter: Prof. Dr. Pablo Ordejon
Director ICN2 - www.icn2.cat
Catalan Insitute of Nanoscience and Nanotechnology
CSIC - Generalitat de Catalunya - UAB
Edificio ICN2, Campus de la U.A.B.
08193 Bellaterra, Barcelona (Spain)
Topic: Layered and 2D materials: electronic properties and structural instabilities from first principles
Time: 04:00 p.m., March 16th (Thursday)
Location: Conference Room B, BLDG 909-1F
Abstract
I will present recent work on the understanding of the electronic properties of layered materials and their 2D relatives by means of first principles electronic structure calculations. In particular, I will focus on the correlation between the crystal structure and the electronic properties, with special emphasis on the structural instabilities with an electronic origin. This will be done in connection to recent experimental studies that have been able to demonstrate the presence of charge density waves (CDW) in several 2D materials like NbSe2 and TiSe2. I will also discuss the correlation between the electronic structure and the experimental STM images and STS spectra on some of these systems, which provide crucial insight for the understanding of their CDW and superconducting instabilities.
Biography
Prof. Pablo Ordejón earned his BSc in Physics (1987) and PhD in Science (1992) at the Universidad Autónoma de Madrid (Spain). He worked as a postdoctoral researcher at the University of Illinois at Urbana-Champaign (USA) from 1992 to 1995, and as Assistant Professor at the Universidad de Oviedo from 1995 to 1999. In 1999, he obtained a research staff position at the Institut de Ciència de Materials de Barcelona of the Consejo Superior de Investigaciones Científicas (CSIC). In 2007 he moved to CIN2 (now ICN2), where he is currently CSIC Research Professor. Since July 2012, he has served as Director of ICN2, where he also leads the Theory and Simulation Research Group. He is known for being one of the inventors of the popular SIESTA software for first-principles calculations. He has published more than 190 scientific articles, which have received nearly 20,000 citations (h = 53).
Contact: Prof. Mario Lanza